.. rn:: 5.5.24-26.0
==============================
|Percona Server| 5.5.24-26.0
==============================
Percona is glad to announce the release of |Percona Server| 5.5.24-26.0 on June 1st, 2012 (Downloads are available `here `_ and from the `Percona Software Repositories `_).
Based on `MySQL 5.5.24 `_, including all the bug fixes in it, |Percona Server| 5.5.24-26.0 is now the current stable release in the 5.5 series. All of |Percona|'s software is open-source and free, all the details of the release can be found in the `5.5.24-26.0 milestone at Launchpad `_.
Features
========
* Percona :ref:`pam_plugin` has now been integrated into the |Percona Server|.
* |Percona Server| has implemented variable :variable:`enforce_storage_engine` which can be used for enforcing the use of a specific storage engine.
* New column, TOTAL_CONNECTIONS_SSL, has been added in the CLIENT_STATISTICS, THREAD_STATISTICS and USER_STATISTICS tables in the INFORMATION_SCHEMA database.
Bug Fixes
=========
* A Server acting as a replication slave with the query cache enabled could crash with glibc detected memory corruption. This bug was introduced in MySQL 5.5.18 and Percona Server inherited it from MySQL. Bug fixed :bug:`915814` (*George Ormond Lorch III*).
* Loading LRU dump was preventing shutdown. Bug fixed :bug:`712055` (*George Ormond Lorch III*).
* A crash could leave behind an InnoDB temporary table with temporary indexes resulting in an unbootable server. Bug fixed :bug:`999147` (*Laurynas Biveinis*).
* Since the output file is simply overwritten when dumping the LRU list, we could end up with a partially written dump file in case of a crash, or when making a backup copy of it. Safer approach has been implemente. It now dumps to a temporary file first, and then rename it to the actual dump file. Bug fixed :bug:`686392` (*George Ormond Lorch III*).
* LRU messages are now more verbose for LRU dump. Bug fixed :bug:`713481` (*George Ormond Lorch III*).
* Building Percona Server with the Clang compiler resulted in a compiler error. Bug fixed :bug:`997496` (*Alexey Kopytov*).
* Variable :variable:`thread_statistics` was a reserved word in Percona Server 5.5. As a result, the server variable with that name had to be quoted with backticks when used. Bug fixed :bug:`997036` (*Vladislav Lesin*).